 <!DOCTYPE html>
 <html>
 <head>
     <meta charset="utf-8">
     <title>JS禁止查看网页源代码的简单实现方法</title>
 </head>
 <body>
     <script type="text/javascript">
         window.onload = function(){
             //屏蔽键盘事件
             document.onkeydown = function (){
                 var e = window.event || arguments[0];
                 //F12
                 if(e.keyCode == 123){
                     return false;
                 //Ctrl+Shift+I
                 }else if((e.ctrlKey) && (e.shiftKey) && (e.keyCode == 73)){
                     return false;
                 //Shift+F10
                 }else if((e.shiftKey) && (e.keyCode == 121)){
                     return false;
                 //Ctrl+U
                 }else if((e.ctrlKey) && (e.keyCode == 85)){
                     return false;
                 }
             };
             //屏蔽鼠标右键
             document.oncontextmenu = function (){
                 return false;
             }
         }
 
     </script>
 </body>
 </html>
